Add SchemaMapper support utility

src/Support/SchemaMapper.php

···
+<?php
+
+namespace SocialDept\AtpParity\Support;
+
+use Closure;
+use Illuminate\Database\Eloquent\Model;
+use SocialDept\AtpParity\RecordMapper;
+use SocialDept\AtpSchema\Data\Data;
+
+/**
+ * Adapter for using atp-schema generated DTOs as record types.
+ *
+ * This allows you to use the auto-generated schema classes directly
+ * without creating custom Record classes.
+ *
+ * Example:
+ *
+ * use SocialDept\AtpSchema\Generated\App\Bsky\Feed\Post;
+ * use App\Models\Post as PostModel;
+ *
+ * $mapper = new SchemaMapper(
+ *     schemaClass: Post::class,
+ *     modelClass: PostModel::class,
+ *     toAttributes: fn(Post $p) => [
+ *         'content' => $p->text,
+ *         'published_at' => $p->createdAt,
+ *     ],
+ *     toRecordData: fn(PostModel $m) => [
+ *         'text' => $m->content,
+ *         'createdAt' => $m->published_at->toIso8601String(),
+ *     ],
+ * );
+ *
+ * $registry->register($mapper);
+ *
+ * @template TSchema of Data
+ * @template TModel of Model
+ *
+ * @extends RecordMapper<TSchema, TModel>
+ */
+class SchemaMapper extends RecordMapper
+{
+    /**
+     * @param  class-string<TSchema>  $schemaClass  The atp-schema generated class
+     * @param  class-string<TModel>  $modelClass  The Eloquent model class
+     * @param  Closure(TSchema): array  $toAttributes  Convert schema to model attributes
+     * @param  Closure(TModel): array  $toRecordData  Convert model to record data
+     */
+    public function __construct(
+        protected string $schemaClass,
+        protected string $modelClass,
+        protected Closure $toAttributes,
+        protected Closure $toRecordData,
+    ) {}
+
+    public function recordClass(): string
+    {
+        return $this->schemaClass;
+    }
+
+    public function modelClass(): string
+    {
+        return $this->modelClass;
+    }
+
+    protected function recordToAttributes(Data $record): array
+    {
+        return ($this->toAttributes)($record);
+    }
+
+    protected function modelToRecordData(Model $model): array
+    {
+        return ($this->toRecordData)($model);
+    }
+}